The Glauke Fountain is carved directly into the rock of the hill west of the Temple of Apollo — a massive rectangular monolith cut from the living limestone, with four chambers hollowed out inside it. It is one of the oldest water installations at the site, dating in its original form to the archaic period, though the Roman-era cuttings and channels are what visitors see today.
Unlike the Fountain of Peirene, the Glauke is easy to miss — it sits at the western edge of the site, slightly below and apart from the main agora area. But it repays a detour. The scale of the cutting is extraordinary: the whole structure is a single massive block of rock, shaped by hand from the hillside rather than built up from separate stones.